Projects/Programs

Displaying 1 - 15 of 15

AC-DC Difference

Ongoing

The use of thermal converters for ac voltage metrology was introduced by Frank Hermach at NIST in 1952. The basic thermal converter is a thermoelement, consisting of a thermocouple positioned at the midpoint of a heater wire, enclosed in an evacuated bulb. The thermoelement senses the heat generated

Advanced Microwave Photonics

Ongoing

NIST is home to a broad interdisciplinary program in quantum information science. NIST is exploring multiple implementations of qubits and strategies for taking advantage of quantum effects to compute, simulate, and improve fundamental measurement strategies. Josephson junctions are at the heart of

Emerging Hardware for Artificial Intelligence

Ongoing

Here is a brief description of our work with links to recent papers from our investigations, broadly classified as experimental and modeling. A brief overview of Josephson junction-based bio-inspired computing can be found in our review article. Experimental We have facilities to develop our devices

Flux Quantum Electronics

Ongoing

Quantum-Based Reference Sources The demand for wireless communications has exploded over the last 2 decades and there is no end in sight. The quest for higher bandwidth is driving the use of higher carrier frequencies in the microwave and millimeter-wave (>30 GHz) bands. However, there are no

Fundamental Electromagnetic Technologies and Standards

Ongoing

This focus area develops theory, metrology, and standards for the technologies upon which the future of both wired and wireless communications depends. These developments are then leveraged to provide better measurement services to U.S. industry through extended frequency range, lowered uncertainty

Getting from Qubit to Mega-Qubit Quantum Computers with Radio Frequency (RF) Calibrations

Ongoing

“Getting from Qubit to Mega-Qubit Quantum Computers with RF Calibrations” is a multi-laboratory effort to develop precision radio frequency measurements in the coldest and darkest places on the planet, cryostats and dilution refrigerators. The projects in this multi-laboratory effort are focused on

Hybrid Quantum Optomechanical Systems with Solid-State Artificial Atoms

Ongoing

Quantum Dot – Surface Acoustic Wave Microwave-to-Optical Transducers In this project, we focus on coupling nanoscale acoustic resonators with InAs quantum dot (QD) single photon sources (Fig. 1). At ultra-low temperatures, such as those in a dilution refrigerator, the acoustic resonators act as

Kinetic Inductance Spectrophotometry

Ongoing

Within this application space, the transition-edge sensor (TES) microcalorimeter is the most mature technology, with demonstrated x-ray energy resolving capabilities of better than a part per thousand. Current TES readout techniques require the use of superconducting quantum interference device

Microcalorimeter Spectrometers for X-ray and Gamma-ray Spectroscopy

Ongoing

The Quantum Calorimeters Project in the Quantum Sensors Group develops and applies sensors that detect the energy of single photons or particles. For example, Transition-Edge Sensors (TESs) are able to measure the energy of single x-ray and gamma-ray photons with a precision better than one part per

Physics and Hardware for Intelligence

Ongoing

Our work in this area can be separated into two categories: conceptual and experimental. Please read our publications linked below for more information. Experimental: Our latest generation of synaptic circuits are described in a 2024 paper published in APL Machine Learning. These circuits are our

10 V programmable Josephson voltage standard (PJVS) and (right) PJVS cryopackaged chip, which are disseminated by the NIST standard reference instrument (SRI) program.

Quantum Voltage Project

Ongoing

Researchers in the Quantum Voltage Project develop and disseminate highly accurate instruments that exploit the quantum mechanical properties of superconductive devices known as Josephson junctions (JJs), as well as measurement techniques and best-practices for using these instruments. When a JJ is

Quantum Waveform Metrology

Ongoing

The recent redefinition of the SI was motivated in part by the success of quantum-based electrical standards, such as those based on the Josephson effect. Quantum standards enable the direct realization of physical quantities that are traceable to fundamental constants, invariant with respect to

Sensing and Imaging of concealed objects

Ongoing

Threats to personal and collective safety abound in our society. The Security Technologies Group (STG) performs research to advance the technology and measurement science of security imaging and sensing. This work includes the establishment of test and evaluation tools, reference test beds, test

Single Photonics and Quantum Information

Ongoing

One of the activities in this group is the development of single photon technologies for quantum information science and technology. We work closely with the Nanostructure Fabrication and Metrology Project on the generation of novel non-classical states of light and the detection of single photons

Fig. 1. Time re-Envisioned: Not a biproduct of computation but the domain in which information is encoded. Leads to different mathematical functions becoming energy efficient primitives.

Temporal Computing

Ongoing

In standard integrated circuits, information that is coded as ones and zeros is implemented by voltages on wires being high or low. The circuits consume energy during transitions between these voltages. Binary numbers have a voltage per bit so there are a lot of transitions each time a number

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